carrierwave删除用户配置文件更新的用户头像

Question

用户创建配置文件并上传头像....没关系。但是，用户决定添加更多信息，以便第二次访问配置文件设置，并且只更改一个或两个文本字段，但不更改头像。 但保存更改头像消失后。如果它没有改变，我希望它留在那里。

验证，参数不允许如果没有选择头像，没有什么似乎帮助。

编辑：加入一些代码

blog.rb模型：

mount_uploader :blog_title_img, BlogTitleUploader 

blog_title_uploader.rb：

class BlogTitleUploader < CarrierWave::Uploader::Base 

    include CarrierWave::MiniMagick 

    def extension_white_list 
    %w(jpg jpeg gif png) 
    end 

    storage :file 

    kvalita = 90 

    def store_dir 
    "uploads/#{model.class.to_s.underscore}/#{model.id}/#{mounted_as}" 
    end 

    version :thumb464 do 
     process :resize_to_fill => [464,304] 
     process :convert => 'jpg' 
     process :quality => kvalita 
    end 

    version :thumb340, from_version: :thumb464 do 
     process :resize_to_fill => [340,304] 
     process :convert => 'jpg' 
     process :quality => kvalita 
    end 

    version :thumb320, from_version: :thumb464 do 
     process :resize_to_fill => [320,200] 
     process :convert => 'jpg' 
     process :quality => kvalita 
    end 

    version :thumb288, from_version: :thumb464 do 
     process :resize_to_fill => [288,304] 
     process :convert => 'jpg' 
     process :quality => kvalita 
    end 

    version :thumb256, from_version: :thumb464 do 
     process :resize_to_fill => [256,304] 
     process :convert => 'jpg' 
     process :quality => kvalita 
    end 

    version :thumb224, from_version: :thumb464 do 
     process :resize_to_fill => [224,304] 
     process :convert => 'jpg' 
     process :quality => kvalita 
    end 

    def filename 
    "#{secure_token()}.jpg" 
    end 

    def secure_token(length=16) 
    var = :"@#{mounted_as}_secure_token" 
    model.instance_variable_get(var) or model.instance_variable_set(var, SecureRandom.hex(length/2)) 
    end 


end 

博客/ edit.html.erb：

<%= 

render partial: "shared/editor", 
object: @blog, 
locals: { 
    backlink: @backlink, 
    title_image: :blog_title_img 
} 

%> 

共享/ _editor.html.erb：

<%= form_for editor do |f| %> 
    <b>Nadpis</b> 
    <br> 
    <%= f.text_field :title, class:"nadpis" %> 
    <br> 
    <b>Link</b> 
    <br> 
    <%= f.text_field :link, class:"nadpis" %> 
    <% if defined?(editor.tags) %> 
     <br> 
     <b>Tagy</b> 
     <br> 
     <%= f.text_field :tags, class:"nadpis" %> 
    <% end %> 
    <br> 
    <b>Úvodný text/popis</b> 
    <br> 
    <%= f.text_area :description, class:"nadpis" %> 
    <br> 
    <b>Text</b> 
    <br> 
    <%= f.text_area :text, class:"text" %> 
    <br> 
    <b>Titulný obrázok</b> 
    <br> 
    <%= image_tag(editor.send(title_image).thumb320.url) if editor.send(title_image) != nil %> 
    <br> 
    <%= f.file_field title_image %> 
    <br> 
    <%= f.hidden_field title_image.to_s + "_cache" %> 
    <br> 
    <% if defined?(kategorie) #&& z.length > 0 
     z = kategorie.reflections[kategorie.reflections.keys.first].active_record.all 
     z.each do |ch| %> 
      <span> 
       <%= check_box "pica", :id, { multiple: true, checked: in_result_set(kategorie, ch) }, ch.id, nil %> 
       <%= ch.title %> 
      </span> 
     <% end %> 
     <br> 
    <% end %> 
    <%= f.radio_button :visible, true %> Publikovať po odoslaní 
    <br> 
    <%= f.radio_button :visible, false %> Zatiaľ nepublikovať 
    <br> 
    <br> 
    <%= f.hidden_field :typ, value: params[:typ] %> 
    <%= f.submit "Uložiť" %> 
<% end %> 

Answer 1

OK用类似的问题今后游客我终于找到了解决办法：

在blog_title_uploader.rb变化：

def filename 
    "#{secure_token()}.jpg" 
end 

到：

def filename 
    "#{secure_token()}.jpg" if original_filename.present? 
end 

现在

页行为与期望。我应该尝试看看控制台输出和分析是什么引擎盖下，越早做......从这里取

解决方案：Carrierwave filename keeps changing on update_attributes